Entropy stable conservative flux form neural networks

• URL: http://arxiv.org/abs/2411.01746v1
• Date: Mon, 04 Nov 2024 02:01:31 GMT
• Title: Entropy stable conservative flux form neural networks
• Authors: Lizuo Liu, Tongtong Li, Anne Gelb, Yoonsang Lee,
• Abstract summary: We propose an entropy-stable conservative flux form neural network (CFN) that integrates classical numerical conservation laws into a data-driven framework. Numerical experiments demonstrate that the entropy-stable CFN achieves both stability and conservation while maintaining accuracy over extended time domains.
• Score: 3.417730578086946
• License:
• Abstract: We propose an entropy-stable conservative flux form neural network (CFN) that integrates classical numerical conservation laws into a data-driven framework using the entropy-stable, second-order, and non-oscillatory Kurganov-Tadmor (KT) scheme. The proposed entropy-stable CFN uses slope limiting as a denoising mechanism, ensuring accurate predictions in both noisy and sparse observation environments, as well as in both smooth and discontinuous regions. Numerical experiments demonstrate that the entropy-stable CFN achieves both stability and conservation while maintaining accuracy over extended time domains. Furthermore, it successfully predicts shock propagation speeds in long-term simulations, {\it without} oracle knowledge of later-time profiles in the training data.

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